chess: improve README with deploy instructions

packages/chess-app/README.md

@@ -1,4 +1,18 @@
-# Bitcoin Computer Chess App
+<div align="center">
+  <img src="./imgs/chess.png" alt="chess-app-screenshot" border="0" style=""/>
+  <h1>Bitcoin Computer Chess</h1>
+  <p>
+    An App for Wagering on Chess
+    <br />
+    <a href="http://bitcoincomputer.io/">website</a> &#183; <a href="http://docs.bitcoincomputer.io/">docs</a>
+  </p>
+</div>
+
+This app allows two users to wager on a game of chess. There are no middlemen, the wagers are held in a 2-of-2 multisig address between the players. **The current version requires that the winner trusts that the looser will help to retrieve the winnings, otherwise the wagers remain locked.**
+
+A future version will be completely trustless, governed by a smart contract.
+
+**This is a work in progress and not recommended for production use.**
 
 ## Usage
 

packages/chess-contracts/README.md

@@ -8,6 +8,14 @@ Start a Bitcoin Computer Node in the package `node`. Copy the `.env.example` fil
 cp .env.example .env
 ```
 
+### Deploy
+
+Before you can start the chess-app, you need to deploy the chess contract.
+
+```
+npm run deploy
+```
+
 ### Test
 
 ```